ASTM D4355-0 Metode Uji Standar untuk Kerusakan Geotekstil di Bawah Paparan Cahaya, kelembaban, dan Panas di Perangkat Arc xenon
ASTM D4355 merupakan metode uji standar kerusakan geotekstil yang terkena cahaya, kelembaban, and heat in xenon arc type equipment. This test describes the determination of tensile strength degradation of any permeable textile material used for soil, foundation, tanah, batu, dll.. It is based on ASTM G155 practices.
ASTM D4355-0 Metode Uji Standar untuk Kerusakan Geotekstil di Bawah Paparan Cahaya, kelembaban, dan Panas di Perangkat Arc xenon
Deterioration of geotextiles
By exposing the sample to xenon arc radiation, moisture and heat (end-use conditions), it is intended to cause property changes. nyatanya, when exposed to these types of factors, polymers can have significantly altered mechanical, electrical, and optical properties. Localized weather-induced deterioration simulations, seperti polusi atmosfer, serangan biologis, and saline exposure, are not expected by the exposures used in this practice. After each exposure period, the sample is cut or stretched strip stretched to produce a degradation curve. The latter allows users to determine the tendency of geotextile materials to deteriorate when exposed to various factors such as solar radiation, water and heat. For a combination of UV exposure and salt water, you should consider ASTM D5894.
Typical experimental parameters for ASTM D4355 testing
The characteristics and operating conditions of the samples are specified in Tables 1 Dan 2, masing-masing.
ASTM D4355-0 Metode Uji Standar untuk Kerusakan Geotekstil di Bawah Paparan Cahaya, kelembaban, dan Panas di Perangkat Arc xenon
Table I: Specifications of sample characteristics
argument | Spesifikasi produk |
Number of specimens required | 20 for each test direction |
Ukuran spesimen | 50 X 150 mm (2 X 6 di dalam) |
ketebalan | Within ± 10% of nominal size |
Meja 2: Specifications of equipment operating conditions
irradiance | At 340nm |
0.35Dengan/(m2nm) Maintained at 0.02W/(m2nm) | |
Exposure period | Only 90 minutes oF light at 65±3 oC (149±5 oF) uninsulated black panel temperature; |
30 minutes of light spray | |
Kelembaban relatif | 50±10% |
(Only during exposure) | |
Lamp filter | To specify |
(Daylight, window glass or extended UV) |